| ( | 10 | ( | 6 | − | x | ) | ) | ( | 10 | x | + | ( | 6 | − | x | ) | ) | = | 1008 |
| Left side of the equation = | 10 | ( | 6 | − | x | ) | ( | 10 | x | + | ( | 6 | − | x | ) | ) |
| = | 10 | × | 6 | ( | 10 | x | + | ( | 6 | − | x | ) | ) | − | 10 | x | ( | 10 | x | + | ( | 6 | − | x | ) | ) |
| = | 60 | ( | 10 | x | + | ( | 6 | − | x | ) | ) | − | 10 | x | ( | 10 | x | + | ( | 6 | − | x | ) | ) |
| = | 60 | × | 10 | x | + | 60 | ( | 6 | − | x | ) | − | 10 | x | ( | 10 | x | + | ( | 6 | − | x | ) | ) |
| = | 600 | x | + | 60 | ( | 6 | − | x | ) | − | 10 | x | ( | 10 | x | + | ( | 6 | − | x | ) | ) |
| = | 600 | x | + | 60 | × | 6 | − | 60 | x | − | 10 | x | ( | 10 | x | + | ( | 6 | − | x | ) | ) |
| = | 600 | x | + | 360 | − | 60 | x | − | 10 | x | ( | 10 | x | + | ( | 6 | − | x | ) | ) |
| = | 540 | x | + | 360 | − | 10 | x | ( | 10 | x | + | ( | 6 | − | x | ) | ) |
| = | 540 | x | + | 360 | − | 10 | x | × | 10 | x | − | 10 | x | ( | 6 | − | x | ) |
| = | 540 | x | + | 360 | − | 100 | x | x | − | 10 | x | ( | 6 | − | x | ) |
| = | 540 | x | + | 360 | − | 100 | x | x | − | 10 | x | × | 6 | + | 10 | x | x |
| = | 540 | x | + | 360 | − | 100 | x | x | − | 60 | x | + | 10 | x | x |
| = | 480 | x | + | 360 | − | 100 | x | x | + | 10 | x | x |
| 480 | x | + | 360 | − | 100 | x | x | + | 10 | x | x | = | 1008 |